Core-Lokts and other factory rounds are round nosed, you will be fine...
As for velocity, unless you are gas checking, keep em below 1500fps till you see if they lead, and if they do, slow down some more...
I shoot hard cast 158 Penn TCBB in my 336RC with no leading, but I am shooting low doses of Red Dot in the 1000-1100 FPS range (guesstimate)...